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# Python Program to find whether a no is the power of two

In this article, we will learn about the solution and approach to solve the given problem statement.

## Problem statement

Given a number n, we need to check whether the given number is a power of two.

## Approach

Continue dividing the input number by two, i.e, = n/2 iteratively.

We will check In each iteration, if n%2 becomes non-zero and n is not 1 then n is not a power of 2.

If n becomes 1 then it is a power of 2.

Let’s see the implementation below −

## Example

def isPowerOfTwo(n): if (n == 0): return False while (n != 1): if (n % 2 != 0): return False n = n // 2 return True # main if(isPowerOfTwo(40)): print('Yes') else: print('No')

## Output

No

All the variables and functions are declared in the global scope as shown below −

## Conclusion

In this article, we learned about the approach to find whether a number is power of two or not.

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